зеркало из https://github.com/mozilla/gecko-dev.git
55 строки
1.7 KiB
JavaScript
55 строки
1.7 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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/**
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* This indexedDB helper is a simplified version of sdk/indexed-db. It creates a DB with
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* a principal dedicated to DevTools.
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*/
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// When running in jest, we can't use Cu.Sandbox and only expose the native indexedDB object
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if (globalThis.indexedDB) {
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module.exports = globalThis.indexedDB;
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} else {
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const PSEUDOURI = "indexeddb://fx-devtools";
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const principaluri = Services.io.newURI(PSEUDOURI);
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const principal = Services.scriptSecurityManager.createContentPrincipal(
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principaluri,
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{}
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);
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// indexedDB is only exposed to document globals.
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// We are retrieving an instance from a Sandbox, which has to be loaded
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// from the system principal in order to avoid having wrappers around
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// all indexed DB objects.
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const systemPrincipal = Services.scriptSecurityManager.getSystemPrincipal();
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const sandbox = Cu.Sandbox(systemPrincipal, {
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wantGlobalProperties: ["indexedDB"],
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});
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const { indexedDB } = sandbox;
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module.exports = Object.freeze({
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/**
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* Only the standard version of indexedDB.open is supported.
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*/
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open(name, version) {
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const options = {};
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if (typeof version === "number") {
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options.version = version;
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}
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return indexedDB.openForPrincipal(principal, name, options);
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},
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/**
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* Only the standard version of indexedDB.deleteDatabase is supported.
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*/
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deleteDatabase(name) {
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return indexedDB.deleteForPrincipal(principal, name);
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},
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cmp: indexedDB.cmp.bind(indexedDB),
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});
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}
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